dc7b83666a
It is intuitive to try to scroll the conversation history using the mouse in the TUI, but prior to this change, we only supported scrolling via keyboard events. This PR enables mouse capture upon initialization (and disables it on exit) such that we get `ScrollUp` and `ScrollDown` events in `codex-rs/tui/src/app.rs`. I initially mapped each event to scrolling by one line, but that felt sluggish. I decided to introduce `ScrollEventHelper` so we could debounce scroll events and measure the number of scroll events in a 100ms window to determine the "magnitude" of the scroll event. I put in a basic heuristic to start, but perhaps someone more motivated can play with it over time. `ScrollEventHelper` takes care of handling the atomic fields and thread management to ensure an `AppEvent::Scroll` event is pumped back through the event loop at the appropriate time with the accumulated delta.
codex-rs
April 24, 2025
Today, Codex CLI is written in TypeScript and requires Node.js 22+ to run it. For a number of users, this runtime requirement inhibits adoption: they would be better served by a standalone executable. As maintainers, we want Codex to run efficiently in a wide range of environments with minimal overhead. We also want to take advantage of operating system-specific APIs to provide better sandboxing, where possible.
To that end, we are moving forward with a Rust implementation of Codex CLI contained in this folder, which has the following benefits:
- The CLI compiles to small, standalone, platform-specific binaries.
- Can make direct, native calls to seccomp and landlock in order to support sandboxing on Linux.
- No runtime garbage collection, resulting in lower memory consumption and better, more predictable performance.
Currently, the Rust implementation is materially behind the TypeScript implementation in functionality, so continue to use the TypeScript implmentation for the time being. We will publish native executables via GitHub Releases as soon as we feel the Rust version is usable.
Code Organization
This folder is the root of a Cargo workspace. It contains quite a bit of experimental code, but here are the key crates:
core/contains the business logic for Codex. Ultimately, we hope this to be a library crate that is generally useful for building other Rust/native applications that use Codex.interactive/CLI with a UX comparable to the TypeScript Codex CLI.exec/"headless" CLI for use in automation.tui/CLI that launches a fullscreen TUI built with Ratatui.repl/CLI that launches a lightweight REPL similar to the Python or Node.js REPL.cli/CLI multitool that provides the aforementioned CLIs via subcommands.